Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 16, NWS Milwaukee, WI

July 4, 1986Oneida County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 4, 1986, 8:33 PM CDT for Oneida County, Wisconsin. It was in force for 42 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 4, 1986, 8:33 PM CDT (01:33 UTC)
Expired: Jul 4, 1986, 9:15 PM CDT
In force: 42 min
Issued by: NWS Milwaukee, WI
Area: Whole counties

County Oneida County, WI

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
Jul 4, 8:35 PM CDT	Tornado F2	Oneida, WI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.6 hours before the alert went out and 176 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2385 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 1275 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 7.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KMKE 050133
SVRMKE
WIC085-050215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE WI
833 PM CDT FRI JUL 4 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 915 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

NORTH CENTRAL WISCONSIN...ONEIDA

AT 830 PM RADAR INDICATED A CLUSTER OF SEVERE THUNDERSTORMS FROM
NEAR RHINELANDER TO JUST SOUTHEAST OF MINOCQUA MOVING EAST AT 30
MILES AN HOUR. THESE STORMS WILL BE AFFECTING THE LAKE TOMAHAWK...
ST GERMAIN...AND STARKS AREA.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...AND
DANGEROUS LIGHTNING. LOCALLY HEAVY RAINFALL FROM A SEVERE
THUNDERSTORM MAKY TRIGGER FLASH FLOODING IN LOW LYING OR URBAN AREAS.
IF THREATENING WEATHER APPROACHES...SEEK SAFE SHELTER.

TRM

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 4, 5:56 PM CDT, 2 hours 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE, WI
556 PM CDT FRI JUL 04 1986

THUNDERSTORMS ARE DEVELOPING RAPIDLY IN NORTHWEST WISCONSIN. THESE
STORMS ARE GROWING IN TAYLOR COUNTY AND EXTEND BACK TOWARDS EAU CLAIRE
..IN EAU CLAIRE COUNTY. MOVEMENT OF THE STORMS WAS TO THE EAST NORTH-
EAST AT 30 MILES AN HOUR.

PERSONS IN NORTHWEST WISCONSIN..ESPECIALLY IN TAYLOR CHIPPEWA AND EAU
CLAIRE COUNTIES..SHOULD KEEP AN EYE TO THE SKY FOR THE 1APPROACH OF
THESE STORMS. HEAVY RAIN..HAIL..GUSTY WINDS..AND DANGEROUS LIGHTNING
MAY ACCOMPANY THESE STORMS AS THEY MOVE TO THE EAST.

MORRIS

Special weather statement, Jul 4, 6:41 PM CDT, 1 hour 52 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE, WI
640 PM CDT FRI JUL 04 1986

     ...THUNDERSTORMS DEVELOPING RAPIDLY IN NORTHERN WISCONSIN...

AT 635 PM CDT WEATHER RADARS INDICATED RAPID DEVELOPMENT OF SHOWERS AND
THUNDERSTORMS ACROSS NORTHERN WISCONSIN.

THE STRONGEST THUNDERSTORM WAS LOCATED 13 MILES SOUTHEAST OF RHINELANDER
NEAR THE MONICO AREA. THIS STORMS IS MOVING EAST NORTHEAST AT 30 MPH AND
WILL BE ENTERING WESTERN FOREST COUNTY AND THE CRANDON AREA BY 700 PM
CDT.

STRONG WINDS...HAIL AND BRIEF HEAVY RAIN ARE QUITE POSSIBLE WITH THIS
AND OTHER THUNDERSTORMS PRESENTLY OCCURING OVER NORTHERN WISCONSIN.

PERSONS SHOULD KEEP AN EYE TO THE SKY FOR THE APPROACH OF THESEY STORMS
AS THEY MAY ALSO CONTAIN DANGEROUS LIGHTNING. IN ADDITION...SEVERE
THUNDERSTORM WATCH NUMBER 333 CONTINUES IN EFFECT UNTIL 100 AM THIS
SATURDAY MORNING FOR MUCH OF CENTRAL AND NORTHEAST WISCONSIN.
TZ

The office that day

Everything else NWS Milwaukee, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 4, 7:03 PM CDT	Severe Thunderstorm Warning	MKX	Taylor	57 min
Jul 4, 7:11 PM CDT	Severe Thunderstorm Warning	MKX	Vilas	34 min
Jul 4, 7:41 PM CDT	Tornado Warning	MKX	Oneida	34 min
Jul 4, 7:52 PM CDT	Severe Thunderstorm Warning	MKX	Vilas	38 min
Jul 4, 8:38 PM CDT	Tornado Warning	MKX	Oneida	37 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1986 Every severe thunderstorm warning in 1986

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.